磷硒配施对冬小麦硒吸收、转运及籽粒有机硒的影响  

Effect of Phosphorus and Selenium Combined Application on Selenium Uptake,Translocation and Organic Selenium in Grain of Winter Wheat

作　　者：胡彩霞 刘红恩[1] 李畅 秦世玉 赵玉焕 张玉鹏 刘亥扬 许嘉阳 赵鹏[1] 聂兆君[1] 王秋红 HU Caixia;LIU Hongen;LI Chang;QIN Shiyu;ZHAO Yuhuan;ZHANG Yupeng;LIU Haiyang;XU Jiayang;ZHAO Peng;NIE Zhaojun;WANG Qiuhong(Key Laboratory of Soil Pollution Prevention and Remediation,College of Resources and Environment,Henan Agricultural University,Zhengzhou 450002,China;Taiqian Country Agricultural and Rural Bureau of Henan Province,Henan Puyang 457600,China;Zhengzhou Agricultural Ecological Protection Service Center,Zhengzhou 450006,China)

机构地区：[1]河南农业大学资源与环境学院,土壤污染防控与修复重点实验室,郑州450002 [2]河南省台前县农业农村局,河南濮阳457600 [3]郑州市农业生态保护服务中心,郑州450006

出　　处：《中国农业科技导报》2023年第11期182-191,共10页Journal of Agricultural Science and Technology

基　　金：河南省科技攻关项目(202102110214);河南省高等学校重点科研项目计划基础研究专项(19zx007)。

摘　　要：为探讨磷(P)硒(Se)配施对冬小麦硒吸收、转运和籽粒有机硒的影响,以冬小麦品种‘郑麦379’为材料进行盆栽试验,设置0(P_(0))、80(P_(80))、160 mg·kg^(-1)(P_(160))3个磷肥水平和0(Se_(0))、1 mg·kg^(-1)(Se_(1))2个硒水平,采用完全交互设计,共6个处理(P_(0)Se_(0)、P_(80)Se_(0)、P_(160)Se_(0)、P_(0)Se_(1)、P_(80)Se_(1)、P_(160)Se_(1)),测定冬小麦产量、植株各部位磷硒含量、累积量、迁移系数及籽粒硒形态。结果表明,磷硒配合施用能显著提高冬小麦产量,P_(80)Se_(1)处理下冬小麦产量最高,达46.25 g·盆^(-1)。施硒显著降低了P_(80)和P_(160)水平下冬小麦各器官磷含量和累积量,但增加了颖壳向籽粒的磷迁移系数。冬小麦各器官硒含量的最高值均出现在P_(0)Se_(1)处理。施磷降低了冬小麦各器官硒含量及根系向茎叶的硒迁移系数,但显著提高冬小麦籽粒以及整株硒累积量。除籽粒外,冬小麦各部位及整株硒累积量最高值均出现在P_(80)Se_(1)处理。施硒增加了颖壳向籽粒的硒迁移系数及P_(80)和P_(160)水平下硒在籽粒、根系中的占比,但降低了硒在颖壳中的占比。硒形态分析显示,施硒提高了冬小麦籽粒中有机硒含量,且籽粒中有机硒主要以硒代蛋氨酸和硒代胱氨酸存在;施磷显著降低硒代蛋氨酸和无机硒含量。综上,适宜的磷硒配施可提高冬小麦产量,有利于促进冬小麦中硒向籽粒的转运,增加籽粒硒累积量和有机硒含量,以P_(80)Se_(1)处理为宜。研究结果为富硒小麦生产中磷肥与硒肥的合理施用提供指导。In order to explore the effects of combined application on selenium(Se)and phosphorus(P)fertilizer on selenium uptake,translocation and organic selenium species in grains of winter wheat,a wheat cultivar‘Zhengmai 379’was chosen as the test material.A pot experiment with 3 P levels of 0(P_(0)),80(P_(80)),160 mg·kg^(-1)(P_(160))and 2 Se levels of 0(Se_(0)),1 mg·kg^(-1)(Se_(1))were set.A total of 6 treatments(P_(0)Se_(0),P_(80)Se_(0),P_(160)Se_(0),P_(0)Se_(1),P_(80)Se_(1),P_(160)Se_(1),respectively)were used to analyze the yield,P and Se concentration,accumulation in each part of winter wheat,transport coefficient and Se species in grain.The results showed that the yield of winter wheat was significantly increased by the combination application of P and Se,and the highest yield of winter wheat was 46.25 g·pot−1 under P_(80)Se_(1) treatment.Se application could significantly reduce the P content and accumulation of each part of the winter wheat,but increase the P migration coefficient of glume to grains under P_(80) and P_(160) treatments.Each part of the winter wheat had high Se concentration under P_(0)Se_(1) treatment.P application reduced the Se concentration of each part of the winter wheat and the Se migration coefficient of root to stem leaf,but increased Se accumulation in grains as well as in whole plant.Besides grain,each tissue as well as in whole plant had high Se accumulation under P_(80)Se_(1) treatment.Se application increased the Se migration coefficient of glume to grain and the proportion of total Se accumulated in the grains and roots of winter wheat under P_(80) and P_(160) treatment,but decreased the ratio of total Se accumulated in glumes.The analysis on selenium species showed that Se application increased the organic Se concentration in the grains,Se in winter wheat grains was mainly in the organic form including selenocystine and selenomethionine.Selenomethionine and inorganic Se concentration in grains decreased with the increasing P application.Therefore,appropriate P combined with

关 键 词：磷 硒 吸收 转运 籽粒硒形态 冬小麦 

分 类 号：S512.1[农业科学—作物学] S311